Sikorsky Aircraft Corporation

David M Lutian

Michael F Mullen

Eric James Hodgkinson

John J Baldyga

Adam R Glasser

Dwaine Wint

Lindsey McKan

A gearbox includes a housing including a lubricant reservoir, at least one gear system arranged in the housing, at least one lubricant delivery passage operable to direct a flow of lubricant from a lubricant reservoir onto the at least one gear system, at least one lubricant return passage operable to guide the flow of lubricant to the lubricant reservoir, and a lubricant-out sensor fluidically connected to the at least one lubricant return passage. The lubricant-out sensor is operable to detect a non-pressure based parameter of the lubricant.

System and method for detecting a lubricant-out condition in an aircraft gearbox

A contaminant detection system for use in a fluid distribution system includes a first detector assembly including an inlet housing and detector screen through which fluid in the fluid distribution system passes and a first sensor to detect a first type of contaminant caught in the detector screen; and a second detector assembly including a second sensor which activates when the inlet housing or detector screen is clogged to detect whether the fluid contains a second type of contaminant when the first sensor does not detect the first type of contaminant.

Anti-clog and non-metallic debris detector for lubrication system inlet

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Milford, CT, United States of America

David M Lutian